CaTT contexts are finite computads

Two novel descriptions of weak {\omega}-categories have been recently proposed, using type-theoretic ideas. The first one is the dependent type theory CaTT whose models are {\omega}-categories. The second is a recursive description of a category of computads together with an adjunction to globular sets, such that the algebras for the induced monad are again {\omega}-categories. We compare the two descriptions by showing that there exits a fully faithful morphism of categories with families from the syntactic category of CaTT to the opposite of the category of computads, which gives an equivalence on the subcategory of finite computads. We derive a more direct connection between the category of models of CaTT and the category of algebras for the monad on globular sets, induced by the adjunction with computads.

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Publication Details

Journal
Electronic Notes in Theoretical Informatics and Computer Science
Published
2024-12-11
DOI
https://doi.org/10.46298/entics.14675
Citations
2
Primary Topic
Formal Methods in Verification
Type
article
Field-Weighted Citation Impact
0.72

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article

CaTT contexts are finite computads

Thibaut Benjamin, Chiara Sarti, Ioannis Markakis
2 citations
Electronic Notes in Theoretical Informatics and Computer Science
Formal Methods in Verification
0.72
article

CaTT contexts are finite computads

Thibaut Benjamin, Chiara Sarti, Ioannis Markakis
article en
2 citations

Abstract

Two novel descriptions of weak {\omega}-categories have been recently proposed, using type-theoretic ideas. The first one is the dependent type theory CaTT whose models are {\omega}-categories. The second is a recursive description of a category of computads together with an adjunction to globular sets, such that the algebras for the induced monad are again {\omega}-categories. We compare the two descriptions by showing that there exits a fully faithful morphism of categories with families from the syntactic category of CaTT to the opposite of the category of computads, which gives an equivalence on the subcategory of finite computads. We derive a more direct connection between the category of models of CaTT and the category of algebras for the monad on globular sets, induced by the adjunction with computads.

Electronic Notes in Theoretical Informatics and Computer ScienceVol. Volume 4 - Proceedings of...
Alexander S. Onassis Public Benefit Foundation
Reduced inequalities
Openalex Percentile: Top 24%
Formal Methods in Verification
0.72
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